83117751342387 has 4 divisors (see below), whose sum is σ = 110823668456520. Its totient is φ = 55411834228256.

The previous prime is 83117751342371. The next prime is 83117751342419. The reversal of 83117751342387 is 78324315771138.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83117751342387 - 2⁴ = 83117751342371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83117751342387.

It is not an unprimeable number, because it can be changed into a prime (83117751342337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13852958557062 + ... + 13852958557067.

It is an arithmetic number, because the mean of its divisors is an integer number (27705917114130).

Almost surely, 2^{83117751342387} is an apocalyptic number.

83117751342387 is a deficient number, since it is larger than the sum of its proper divisors (27705917114133).

83117751342387 is a wasteful number, since it uses less digits than its factorization.

83117751342387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27705917114132.

The product of its digits is 23708160, while the sum is 60.

The spelling of 83117751342387 in words is "eighty-three trillion, one hundred seventeen billion, seven hundred fifty-one million, three hundred forty-two thousand, three hundred eighty-seven".